The device is more than resistors and wires. I can turn off your charger when the plug is removed and do other on and off tricks automatically and safely. That will be why he want it. I want one too.Hi, you don't need it, you can use resistors and a diode to get energy from EVSE's. Is there a specific reason you want that device?
Attached you will find a basic wiring from EVTV
If you need the inlet ready to use with 1.4m of 8awg wires, I have it at $75USD
There are some on Ebay for the same price. Did you look there?